1.I can't get over my disappointment in not being a boy.

【难句解析】get over意思是“克服、把...忘掉”；

【句子翻译】做不成男孩真让我止不住失望。

2.So you must try to be contented with making your name boyish, and playing brother to us girls...

【难句解析】这句的主干是be contented with making...and playing...

【句子翻译】你只好把自己的名字改得男子气一些，扮演我们姐妹的哥哥，找点安慰